Glass optical element blank preparation device and method thereof

Abstract

The invention provides an infrared chalcogenide glass optical element blank preparation device which is high in material utilization rate and convenient and a method thereof. According to the device,a sealing capsule is arranged on a machine frame, a sealing cover is supported and pushed by an ascending cylinder, the sealing cover is fitted with the sealing capsule in an operation to conduct sealing, a mould is arranged on a working platform, the working platform is arranged on the sealing cover, a vacuum machine is communicated with the interior of the sealing capsule through a guiding pipe,a nitrogen gas diffuser is arranged in the sealing capsule, a heating ring is arranged in the sealing capsule and located right above the working platform, heating of the heating ring is controlled by a sensing heating device, and a pressing mechanism is arranged right above the heating ring. According to the device, blank preparation process is optimized from 3 steps to 2 steps, circulation speed of materials is improved, and the material utilization rate is increased from 20% to more than 50%. The infrared chalcogenide glass optical element blank preparation device can also be used for preparing blanks of other types of glass optical elements except for infrared chalcogenide glass optical elements.

Description

technical field [0001] The invention relates to an optical element blank preparation device, in particular to an infrared chalcogenide glass optical element blank preparation device and method thereof. Background technique [0002] Infrared chalcogenide glass components are candidate materials to replace germanium in the optical system of thermal imagers. They are widely used in terminal electronic products such as vehicles, security monitoring, air conditioners, mobile phones, military gun sights, infrared guidance, and smart homes. Infrared chalcogenide glass materials are soft, brittle, and expensive, generally costing thousands to tens of thousands of yuan per kilogram. [0003] At present, the preparation method of infrared chalcogenide glass components is to first cut the raw materials into spherical blanks, and then use single-point diamond equipment to process them into aspherical products. round and milled spherical surfaces such as figure 1 As shown, the disadvan...

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Problems solved by technology

[0003] At present, the preparation method of infrared chalcogenide glass components is to first cut the raw materials into spherical blanks, and then use single-point diamond equipment to process them into aspherical products. round and milled spherical surfaces such as figure 1 As shown, the disadvantages of this method are: 1) it needs to go through 3 processes, the preparation process is long, and the material flow is slow; 2) the material utilization rate is only about 20%, the material utilization rate is low, and the infrared chalcogenide glass material is expensive and the material loss Large lead to high cost; 3) The internal density of the material is poor, and the product is easily broken

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